FKIE_CVE-2021-34696

Vulnerability from fkie_nvd - Published: 2021-09-23 03:15 - Updated: 2024-11-21 06:10
Severity ?
5.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
5.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Summary
A vulnerability in the access control list (ACL) programming of Cisco ASR 900 and ASR 920 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to incorrect programming of hardware when an ACL is configured using a method other than the configuration CLI. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.
References
psirt@cisco.comhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr900acl-UeEyCxkvVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr900acl-UeEyCxkvVendor Advisory
Impacted products
Vendor Product Version
cisco ios_xe *
cisco asr_902 -
cisco asr_903 -
cisco asr_907 -
cisco asr_920-10sz-pd -
cisco asr_920-10sz-pd_r -
cisco asr_920-12cz-a -
cisco asr_920-12cz-a_r -
cisco asr_920-12cz-d -
cisco asr_920-12cz-d_r -
cisco asr_920-12sz-im -
cisco asr_920-12sz-im_r -
cisco asr_920-24sz-im -
cisco asr_920-24sz-im_r -
cisco asr_920-24sz-m -
cisco asr_920-24sz-m_r -
cisco asr_920-24tz-m -
cisco asr_920-24tz-m_r -
cisco asr_920-4sz-a -
cisco asr_920-4sz-a_r -
cisco asr_920-4sz-d -
cisco asr_920-4sz-d_r -
cisco asr_920u-12sz-im -
To clipboard 

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      "value": "A vulnerability in the access control list (ACL) programming of Cisco ASR 900 and ASR 920 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to incorrect programming of hardware when an ACL is configured using a method other than the configuration CLI. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device."
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      "value": "Una vulnerabilidad en la programaci\u00f3n de la lista de control de acceso (ACL) de Cisco ASR 900 and ASR 920 Series Aggregation Services Routers podr\u00eda permitir a un atacante remoto no autenticado omitir una ACL configurada. Esta vulnerabilidad es debido a la programaci\u00f3n incorrecta del hardware cuando se configura una ACL mediante un m\u00e9todo distinto de la CLI de configuraci\u00f3n. Un atacante podr\u00eda explotar esta vulnerabilidad al intentar enviar tr\u00e1fico mediante un dispositivo afectado. Una explotaci\u00f3n con \u00e9xito podr\u00eda permitir al atacante omitir una ACL en el dispositivo afectado"
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  "id": "CVE-2021-34696",
  "lastModified": "2024-11-21T06:10:58.117",
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        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
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          "accessVector": "NETWORK",
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          "integrityImpact": "PARTIAL",
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  "published": "2021-09-23T03:15:15.633",
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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.